Christopher Sykes’s 1972 biography of a member of this family disregards accusations made in Claud Cockburn’s (“COH-burn’s”) article “The Best People’s Front.” Mandy Rice-Davies quipped “Well he would, wouldn’t he” after a member of this family denied having an affair with her during the Profumo Scandal. The “Cliveden (“CLIV-den”) Set” (-5[1])was led by a Nazi (10[2])sympathizer from (10[1]-5[1])this family who was the first female member of the House (10[1])of Commons. (10[3])In 1849, (10[1]-5[2])William Macready was heckled by fans of Edwin Forrest at a theater named (10[1])after this (10[1])family. A building owned by this family hosted the Senate inquiry into the sinking of the Titanic, (10[1])which killed a fourth-generation member. (10[4]-5[1])A different (10[1])member of this family names a trading post (10[1])established in 1811 (10[1])at the mouth of the Columbia River. (10[1])For 10 points, the American Fur Company was started by what family’s patriarch John Jacob? ■END■ (10[5])